Summary of Significant Accounting Policies Recently Adopted Accounting Pronouncements (Details) $ in Millions	Sep. 29, 2017 USD ($)
Deferred Tax Asset [Domain]
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (13.6)
Other Assets [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	12.6
Current Deferred Tax Liability [Domain]
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	(0.5)
Current Deferred Tax Liability [Domain]
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (0.5)